Division .8.1 F1

The central operating console at the navigating bridge shall have a ‘ master mode ’ switch with two modes of control: a ‘ local control ’ mode which shall allow any door to be locally opened and locally closed after use without automatic closure, and a ‘ doors closed ’ mode which shall automatically close any doors that are open. The ‘ doors closed ’ mode shall permit doors to be opened locally and shall automatically re-close the door upon release of the local control mechanism. The ‘ master mode ’ switch shall normally be in the ‘ local control ’ mode. The ‘ door closed ’ mode shall only be used in an emergency or for testing purposes.